Exercise treadmill



FIG. 1 is a left side elevational view of the exercise treadmill showing our new design, the right side view being a mirror image.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof.

The broken line showing of control panel is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an exercise treadmill, as shown and described. 